245890395972 has 72 divisors (see below), whose sum is σ = 704598236160. Its totient is φ = 71676550080.

The previous prime is 245890395869. The next prime is 245890395979. The reversal of 245890395972 is 279593098542.

245890395972 is a `hidden beast` number, since 2 + 4 + 5 + 8 + 9 + 0 + 39 + 597 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (245890395979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13817604 + ... + 13835387.

Almost surely, 2^245890395972 is an apocalyptic number.

It is an amenable number.

245890395972 is an abundant number, since it is smaller than the sum of its proper divisors (458707840188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245890395972 is a wasteful number, since it uses less digits than its factorization.

245890395972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27653033 (or 27653028 counting only the distinct ones).

The product of its (nonzero) digits is 48988800, while the sum is 63.

The spelling of 245890395972 in words is "two hundred forty-five billion, eight hundred ninety million, three hundred ninety-five thousand, nine hundred seventy-two".